from sqlalchemy.testing import assert_raises from sqlalchemy.testing import assert_raises_message from sqlalchemy.testing import emits_warning import pickle from sqlalchemy import Integer, String, UniqueConstraint, \ CheckConstraint, ForeignKey, MetaData, Sequence, \ ForeignKeyConstraint, PrimaryKeyConstraint, ColumnDefault, Index, event,\ events, Unicode, types as sqltypes, bindparam, \ Table, Column, Boolean, Enum, func, text, BLANK_SCHEMA from sqlalchemy import schema, exc from sqlalchemy.sql import elements, naming import sqlalchemy as tsa from sqlalchemy.testing import fixtures from sqlalchemy import testing from sqlalchemy.testing import ComparesTables, AssertsCompiledSQL from sqlalchemy.testing import eq_, is_, mock from contextlib import contextmanager from sqlalchemy import util class MetaDataTest(fixtures.TestBase, ComparesTables): def test_metadata_contains(self): metadata = MetaData() t1 = Table('t1', metadata, Column('x', Integer)) t2 = Table('t2', metadata, Column('x', Integer), schema='foo') t3 = Table('t2', MetaData(), Column('x', Integer)) t4 = Table('t1', MetaData(), Column('x', Integer), schema='foo') assert "t1" in metadata assert "foo.t2" in metadata assert "t2" not in metadata assert "foo.t1" not in metadata assert t1 in metadata assert t2 in metadata assert t3 not in metadata assert t4 not in metadata def test_uninitialized_column_copy(self): for col in [ Column('foo', String(), nullable=False), Column('baz', String(), unique=True), Column(Integer(), primary_key=True), Column('bar', Integer(), Sequence('foo_seq'), primary_key=True, key='bar'), Column(Integer(), ForeignKey('bat.blah'), doc="this is a col"), Column('bar', Integer(), ForeignKey('bat.blah'), primary_key=True, key='bar'), Column('bar', Integer(), info={'foo': 'bar'}), ]: c2 = col.copy() for attr in ('name', 'type', 'nullable', 'primary_key', 'key', 'unique', 'info', 'doc'): eq_(getattr(col, attr), getattr(c2, attr)) eq_(len(col.foreign_keys), len(c2.foreign_keys)) if col.default: eq_(c2.default.name, 'foo_seq') for a1, a2 in zip(col.foreign_keys, c2.foreign_keys): assert a1 is not a2 eq_(a2._colspec, 'bat.blah') def test_col_subclass_copy(self): class MyColumn(schema.Column): def __init__(self, *args, **kw): self.widget = kw.pop('widget', None) super(MyColumn, self).__init__(*args, **kw) def copy(self, *arg, **kw): c = super(MyColumn, self).copy(*arg, **kw) c.widget = self.widget return c c1 = MyColumn('foo', Integer, widget='x') c2 = c1.copy() assert isinstance(c2, MyColumn) eq_(c2.widget, 'x') def test_uninitialized_column_copy_events(self): msgs = [] def write(c, t): msgs.append("attach %s.%s" % (t.name, c.name)) c1 = Column('foo', String()) m = MetaData() for i in range(3): cx = c1.copy() # as of 0.7, these events no longer copy. its expected # that listeners will be re-established from the # natural construction of things. cx._on_table_attach(write) Table('foo%d' % i, m, cx) eq_(msgs, ['attach foo0.foo', 'attach foo1.foo', 'attach foo2.foo']) def test_schema_collection_add(self): metadata = MetaData() Table('t1', metadata, Column('x', Integer), schema='foo') Table('t2', metadata, Column('x', Integer), schema='bar') Table('t3', metadata, Column('x', Integer)) eq_(metadata._schemas, set(['foo', 'bar'])) eq_(len(metadata.tables), 3) def test_schema_collection_remove(self): metadata = MetaData() t1 = Table('t1', metadata, Column('x', Integer), schema='foo') Table('t2', metadata, Column('x', Integer), schema='bar') t3 = Table('t3', metadata, Column('x', Integer), schema='bar') metadata.remove(t3) eq_(metadata._schemas, set(['foo', 'bar'])) eq_(len(metadata.tables), 2) metadata.remove(t1) eq_(metadata._schemas, set(['bar'])) eq_(len(metadata.tables), 1) def test_schema_collection_remove_all(self): metadata = MetaData() Table('t1', metadata, Column('x', Integer), schema='foo') Table('t2', metadata, Column('x', Integer), schema='bar') metadata.clear() eq_(metadata._schemas, set()) eq_(len(metadata.tables), 0) def test_metadata_tables_immutable(self): metadata = MetaData() Table('t1', metadata, Column('x', Integer)) assert 't1' in metadata.tables assert_raises( TypeError, lambda: metadata.tables.pop('t1') ) @testing.provide_metadata def test_dupe_tables(self): metadata = self.metadata Table('table1', metadata, Column('col1', Integer, primary_key=True), Column('col2', String(20))) metadata.create_all() Table('table1', metadata, autoload=True) def go(): Table('table1', metadata, Column('col1', Integer, primary_key=True), Column('col2', String(20))) assert_raises_message( tsa.exc.InvalidRequestError, "Table 'table1' is already defined for this " "MetaData instance. Specify 'extend_existing=True' " "to redefine options and columns on an existing " "Table object.", go ) def test_fk_copy(self): c1 = Column('foo', Integer) c2 = Column('bar', Integer) m = MetaData() t1 = Table('t', m, c1, c2) kw = dict(onupdate="X", ondelete="Y", use_alter=True, name='f1', deferrable="Z", initially="Q", link_to_name=True) fk1 = ForeignKey(c1, **kw) fk2 = ForeignKeyConstraint((c1,), (c2,), **kw) t1.append_constraint(fk2) fk1c = fk1.copy() fk2c = fk2.copy() for k in kw: eq_(getattr(fk1c, k), kw[k]) eq_(getattr(fk2c, k), kw[k]) def test_check_constraint_copy(self): r = lambda x: x c = CheckConstraint("foo bar", name='name', initially=True, deferrable=True, _create_rule=r) c2 = c.copy() eq_(c2.name, 'name') eq_(str(c2.sqltext), "foo bar") eq_(c2.initially, True) eq_(c2.deferrable, True) assert c2._create_rule is r def test_col_replace_w_constraint(self): m = MetaData() a = Table('a', m, Column('id', Integer, primary_key=True)) aid = Column('a_id', ForeignKey('a.id')) b = Table('b', m, aid) b.append_column(aid) assert b.c.a_id.references(a.c.id) eq_(len(b.constraints), 2) def test_fk_construct(self): c1 = Column('foo', Integer) c2 = Column('bar', Integer) m = MetaData() t1 = Table('t', m, c1, c2) fk1 = ForeignKeyConstraint(('foo', ), ('bar', ), table=t1) assert fk1 in t1.constraints def test_fk_constraint_col_collection_w_table(self): c1 = Column('foo', Integer) c2 = Column('bar', Integer) m = MetaData() t1 = Table('t', m, c1, c2) fk1 = ForeignKeyConstraint(('foo', ), ('bar', ), table=t1) eq_(dict(fk1.columns), {"foo": c1}) def test_fk_constraint_col_collection_no_table(self): fk1 = ForeignKeyConstraint(('foo', 'bat'), ('bar', 'hoho')) eq_(dict(fk1.columns), {}) eq_(fk1.column_keys, ['foo', 'bat']) eq_(fk1._col_description, 'foo, bat') eq_(fk1._elements, {"foo": fk1.elements[0], "bat": fk1.elements[1]}) def test_fk_constraint_col_collection_no_table_real_cols(self): c1 = Column('foo', Integer) c2 = Column('bar', Integer) fk1 = ForeignKeyConstraint((c1, ), (c2, )) eq_(dict(fk1.columns), {}) eq_(fk1.column_keys, ['foo']) eq_(fk1._col_description, 'foo') eq_(fk1._elements, {"foo": fk1.elements[0]}) def test_fk_constraint_col_collection_added_to_table(self): c1 = Column('foo', Integer) m = MetaData() fk1 = ForeignKeyConstraint(('foo', ), ('bar', )) Table('t', m, c1, fk1) eq_(dict(fk1.columns), {"foo": c1}) eq_(fk1._elements, {"foo": fk1.elements[0]}) def test_fk_constraint_col_collection_via_fk(self): fk = ForeignKey('bar') c1 = Column('foo', Integer, fk) m = MetaData() t1 = Table('t', m, c1) fk1 = fk.constraint eq_(fk1.column_keys, ['foo']) assert fk1 in t1.constraints eq_(fk1.column_keys, ['foo']) eq_(dict(fk1.columns), {"foo": c1}) eq_(fk1._elements, {"foo": fk}) def test_fk_no_such_parent_col_error(self): meta = MetaData() a = Table('a', meta, Column('a', Integer)) Table('b', meta, Column('b', Integer)) def go(): a.append_constraint( ForeignKeyConstraint(['x'], ['b.b']) ) assert_raises_message( exc.ArgumentError, "Can't create ForeignKeyConstraint on " "table 'a': no column named 'x' is present.", go ) def test_fk_given_non_col(self): not_a_col = bindparam('x') assert_raises_message( exc.ArgumentError, "String, Column, or Column-bound argument expected, got Bind", ForeignKey, not_a_col ) def test_fk_given_non_col_clauseelem(self): class Foo(object): def __clause_element__(self): return bindparam('x') assert_raises_message( exc.ArgumentError, "String, Column, or Column-bound argument expected, got Bind", ForeignKey, Foo() ) def test_fk_given_col_non_table(self): t = Table('t', MetaData(), Column('x', Integer)) xa = t.alias().c.x assert_raises_message( exc.ArgumentError, "ForeignKey received Column not bound to a Table, got: .*Alias", ForeignKey, xa ) def test_fk_given_col_non_table_clauseelem(self): t = Table('t', MetaData(), Column('x', Integer)) class Foo(object): def __clause_element__(self): return t.alias().c.x assert_raises_message( exc.ArgumentError, "ForeignKey received Column not bound to a Table, got: .*Alias", ForeignKey, Foo() ) def test_fk_no_such_target_col_error_upfront(self): meta = MetaData() a = Table('a', meta, Column('a', Integer)) Table('b', meta, Column('b', Integer)) a.append_constraint(ForeignKeyConstraint(['a'], ['b.x'])) assert_raises_message( exc.NoReferencedColumnError, "Could not initialize target column for ForeignKey 'b.x' on " "table 'a': table 'b' has no column named 'x'", getattr, list(a.foreign_keys)[0], "column" ) def test_fk_no_such_target_col_error_delayed(self): meta = MetaData() a = Table('a', meta, Column('a', Integer)) a.append_constraint( ForeignKeyConstraint(['a'], ['b.x'])) b = Table('b', meta, Column('b', Integer)) assert_raises_message( exc.NoReferencedColumnError, "Could not initialize target column for ForeignKey 'b.x' on " "table 'a': table 'b' has no column named 'x'", getattr, list(a.foreign_keys)[0], "column" ) def test_pickle_metadata_sequence_restated(self): m1 = MetaData() Table('a', m1, Column('id', Integer, primary_key=True), Column('x', Integer, Sequence("x_seq"))) m2 = pickle.loads(pickle.dumps(m1)) s2 = Sequence("x_seq") t2 = Table('a', m2, Column('id', Integer, primary_key=True), Column('x', Integer, s2), extend_existing=True) assert m2._sequences['x_seq'] is t2.c.x.default assert m2._sequences['x_seq'] is s2 def test_sequence_restated_replaced(self): """Test restatement of Sequence replaces.""" m1 = MetaData() s1 = Sequence("x_seq") t = Table('a', m1, Column('x', Integer, s1) ) assert m1._sequences['x_seq'] is s1 s2 = Sequence('x_seq') Table('a', m1, Column('x', Integer, s2), extend_existing=True ) assert t.c.x.default is s2 assert m1._sequences['x_seq'] is s2 def test_sequence_attach_to_table(self): m1 = MetaData() s1 = Sequence("s") t = Table('a', m1, Column('x', Integer, s1)) assert s1.metadata is m1 def test_sequence_attach_to_existing_table(self): m1 = MetaData() s1 = Sequence("s") t = Table('a', m1, Column('x', Integer)) t.c.x._init_items(s1) assert s1.metadata is m1 def test_pickle_metadata_sequence_implicit(self): m1 = MetaData() Table('a', m1, Column('id', Integer, primary_key=True), Column('x', Integer, Sequence("x_seq"))) m2 = pickle.loads(pickle.dumps(m1)) t2 = Table('a', m2, extend_existing=True) eq_(m2._sequences, {'x_seq': t2.c.x.default}) def test_pickle_metadata_schema(self): m1 = MetaData() Table('a', m1, Column('id', Integer, primary_key=True), Column('x', Integer, Sequence("x_seq")), schema='y') m2 = pickle.loads(pickle.dumps(m1)) Table('a', m2, schema='y', extend_existing=True) eq_(m2._schemas, m1._schemas) def test_metadata_schema_arg(self): m1 = MetaData(schema='sch1') m2 = MetaData(schema='sch1', quote_schema=True) m3 = MetaData(schema='sch1', quote_schema=False) m4 = MetaData() for i, (name, metadata, schema, quote_schema, exp_schema, exp_quote_schema) in enumerate([ ('t1', m1, None, None, 'sch1', None), ('t2', m1, 'sch2', None, 'sch2', None), ('t3', m1, 'sch2', True, 'sch2', True), ('t4', m1, 'sch1', None, 'sch1', None), ('t5', m1, BLANK_SCHEMA, None, None, None), ('t1', m2, None, None, 'sch1', True), ('t2', m2, 'sch2', None, 'sch2', None), ('t3', m2, 'sch2', True, 'sch2', True), ('t4', m2, 'sch1', None, 'sch1', None), ('t1', m3, None, None, 'sch1', False), ('t2', m3, 'sch2', None, 'sch2', None), ('t3', m3, 'sch2', True, 'sch2', True), ('t4', m3, 'sch1', None, 'sch1', None), ('t1', m4, None, None, None, None), ('t2', m4, 'sch2', None, 'sch2', None), ('t3', m4, 'sch2', True, 'sch2', True), ('t4', m4, 'sch1', None, 'sch1', None), ('t5', m4, BLANK_SCHEMA, None, None, None), ]): kw = {} if schema is not None: kw['schema'] = schema if quote_schema is not None: kw['quote_schema'] = quote_schema t = Table(name, metadata, **kw) eq_(t.schema, exp_schema, "test %d, table schema" % i) eq_(t.schema.quote if t.schema is not None else None, exp_quote_schema, "test %d, table quote_schema" % i) seq = Sequence(name, metadata=metadata, **kw) eq_(seq.schema, exp_schema, "test %d, seq schema" % i) eq_(seq.schema.quote if seq.schema is not None else None, exp_quote_schema, "test %d, seq quote_schema" % i) def test_manual_dependencies(self): meta = MetaData() a = Table('a', meta, Column('foo', Integer)) b = Table('b', meta, Column('foo', Integer)) c = Table('c', meta, Column('foo', Integer)) d = Table('d', meta, Column('foo', Integer)) e = Table('e', meta, Column('foo', Integer)) e.add_is_dependent_on(c) a.add_is_dependent_on(b) b.add_is_dependent_on(d) e.add_is_dependent_on(b) c.add_is_dependent_on(a) eq_( meta.sorted_tables, [d, b, a, c, e] ) def test_deterministic_order(self): meta = MetaData() a = Table('a', meta, Column('foo', Integer)) b = Table('b', meta, Column('foo', Integer)) c = Table('c', meta, Column('foo', Integer)) d = Table('d', meta, Column('foo', Integer)) e = Table('e', meta, Column('foo', Integer)) e.add_is_dependent_on(c) a.add_is_dependent_on(b) eq_( meta.sorted_tables, [b, c, d, a, e] ) def test_nonexistent(self): assert_raises(tsa.exc.NoSuchTableError, Table, 'fake_table', MetaData(testing.db), autoload=True) def test_assorted_repr(self): t1 = Table("foo", MetaData(), Column("x", Integer)) i1 = Index("bar", t1.c.x) ck = schema.CheckConstraint("x > y", name="someconstraint") for const, exp in ( (Sequence("my_seq"), "Sequence('my_seq')"), (Sequence("my_seq", start=5), "Sequence('my_seq', start=5)"), (Column("foo", Integer), "Column('foo', Integer(), table=None)"), (Table("bar", MetaData(), Column("x", String)), "Table('bar', MetaData(bind=None), " "Column('x', String(), table=), schema=None)"), (schema.DefaultGenerator(for_update=True), "DefaultGenerator(for_update=True)"), (schema.Index("bar", "c"), "Index('bar', 'c')"), (i1, "Index('bar', Column('x', Integer(), table=))"), (schema.FetchedValue(), "FetchedValue()"), (ck, "CheckConstraint(" "%s" ", name='someconstraint')" % repr(ck.sqltext)), ): eq_( repr(const), exp ) class ToMetaDataTest(fixtures.TestBase, ComparesTables): @testing.requires.check_constraints def test_copy(self): from sqlalchemy.testing.schema import Table meta = MetaData() table = Table( 'mytable', meta, Column( 'myid', Integer, Sequence('foo_id_seq'), primary_key=True), Column( 'name', String(40), nullable=True), Column( 'foo', String(40), nullable=False, server_default='x', server_onupdate='q'), Column( 'bar', String(40), nullable=False, default='y', onupdate='z'), Column( 'description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), test_needs_fk=True) table2 = Table( 'othertable', meta, Column( 'id', Integer, Sequence('foo_seq'), primary_key=True), Column( 'myid', Integer, ForeignKey('mytable.myid'), ), test_needs_fk=True) def test_to_metadata(): meta2 = MetaData() table_c = table.tometadata(meta2) table2_c = table2.tometadata(meta2) return (table_c, table2_c) def test_pickle(): meta.bind = testing.db meta2 = pickle.loads(pickle.dumps(meta)) assert meta2.bind is None pickle.loads(pickle.dumps(meta2)) return (meta2.tables['mytable'], meta2.tables['othertable']) def test_pickle_via_reflect(): # this is the most common use case, pickling the results of a # database reflection meta2 = MetaData(bind=testing.db) t1 = Table('mytable', meta2, autoload=True) Table('othertable', meta2, autoload=True) meta3 = pickle.loads(pickle.dumps(meta2)) assert meta3.bind is None assert meta3.tables['mytable'] is not t1 return (meta3.tables['mytable'], meta3.tables['othertable']) meta.create_all(testing.db) try: for test, has_constraints, reflect in \ (test_to_metadata, True, False), \ (test_pickle, True, False), \ (test_pickle_via_reflect, False, True): table_c, table2_c = test() self.assert_tables_equal(table, table_c) self.assert_tables_equal(table2, table2_c) assert table is not table_c assert table.primary_key is not table_c.primary_key assert list(table2_c.c.myid.foreign_keys)[0].column \ is table_c.c.myid assert list(table2_c.c.myid.foreign_keys)[0].column \ is not table.c.myid assert 'x' in str(table_c.c.foo.server_default.arg) if not reflect: assert isinstance(table_c.c.myid.default, Sequence) assert str(table_c.c.foo.server_onupdate.arg) == 'q' assert str(table_c.c.bar.default.arg) == 'y' assert getattr(table_c.c.bar.onupdate.arg, 'arg', table_c.c.bar.onupdate.arg) == 'z' assert isinstance(table2_c.c.id.default, Sequence) # constraints don't get reflected for any dialect right # now if has_constraints: for c in table_c.c.description.constraints: if isinstance(c, CheckConstraint): break else: assert False assert str(c.sqltext) == "description='hi'" for c in table_c.constraints: if isinstance(c, UniqueConstraint): break else: assert False assert c.columns.contains_column(table_c.c.name) assert not c.columns.contains_column(table.c.name) finally: meta.drop_all(testing.db) def test_col_key_fk_parent(self): # test #2643 m1 = MetaData() a = Table('a', m1, Column('x', Integer)) b = Table('b', m1, Column('x', Integer, ForeignKey('a.x'), key='y')) assert b.c.y.references(a.c.x) m2 = MetaData() b2 = b.tometadata(m2) a2 = a.tometadata(m2) assert b2.c.y.references(a2.c.x) def test_change_schema(self): meta = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), Column('name', String(40), nullable=True), Column('description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), ) table2 = Table('othertable', meta, Column('id', Integer, primary_key=True), Column('myid', Integer, ForeignKey('mytable.myid')), ) meta2 = MetaData() table_c = table.tometadata(meta2, schema='someschema') table2_c = table2.tometadata(meta2, schema='someschema') eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid == table2_c.c.myid)) eq_(str(table_c.join(table2_c).onclause), 'someschema.mytable.myid = someschema.othertable.myid') def test_retain_table_schema(self): meta = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), Column('name', String(40), nullable=True), Column('description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), schema='myschema', ) table2 = Table( 'othertable', meta, Column( 'id', Integer, primary_key=True), Column( 'myid', Integer, ForeignKey('myschema.mytable.myid')), schema='myschema', ) meta2 = MetaData() table_c = table.tometadata(meta2) table2_c = table2.tometadata(meta2) eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid == table2_c.c.myid)) eq_(str(table_c.join(table2_c).onclause), 'myschema.mytable.myid = myschema.othertable.myid') def test_change_name_retain_metadata(self): meta = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), Column('name', String(40), nullable=True), Column('description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), schema='myschema', ) table2 = table.tometadata(table.metadata, name='newtable') table3 = table.tometadata(table.metadata, schema='newschema', name='newtable') assert table.metadata is table2.metadata assert table.metadata is table3.metadata eq_((table.name, table2.name, table3.name), ('mytable', 'newtable', 'newtable')) eq_((table.key, table2.key, table3.key), ('myschema.mytable', 'myschema.newtable', 'newschema.newtable')) def test_change_name_change_metadata(self): meta = MetaData() meta2 = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), Column('name', String(40), nullable=True), Column('description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), schema='myschema', ) table2 = table.tometadata(meta2, name='newtable') assert table.metadata is not table2.metadata eq_((table.name, table2.name), ('mytable', 'newtable')) eq_((table.key, table2.key), ('myschema.mytable', 'myschema.newtable')) def test_change_name_selfref_fk_moves(self): meta = MetaData() referenced = Table('ref', meta, Column('id', Integer, primary_key=True), ) table = Table('mytable', meta, Column('id', Integer, primary_key=True), Column('parent_id', ForeignKey('mytable.id')), Column('ref_id', ForeignKey('ref.id')) ) table2 = table.tometadata(table.metadata, name='newtable') assert table.metadata is table2.metadata assert table2.c.ref_id.references(referenced.c.id) assert table2.c.parent_id.references(table2.c.id) def test_change_name_selfref_fk_moves_w_schema(self): meta = MetaData() referenced = Table('ref', meta, Column('id', Integer, primary_key=True), ) table = Table('mytable', meta, Column('id', Integer, primary_key=True), Column('parent_id', ForeignKey('mytable.id')), Column('ref_id', ForeignKey('ref.id')) ) table2 = table.tometadata( table.metadata, name='newtable', schema='newschema') ref2 = referenced.tometadata(table.metadata, schema='newschema') assert table.metadata is table2.metadata assert table2.c.ref_id.references(ref2.c.id) assert table2.c.parent_id.references(table2.c.id) def _assert_fk(self, t2, schema, expected, referred_schema_fn=None): m2 = MetaData() existing_schema = t2.schema if schema: t2c = t2.tometadata(m2, schema=schema, referred_schema_fn=referred_schema_fn) eq_(t2c.schema, schema) else: t2c = t2.tometadata(m2, referred_schema_fn=referred_schema_fn) eq_(t2c.schema, existing_schema) eq_(list(t2c.c.y.foreign_keys)[0]._get_colspec(), expected) def test_fk_has_schema_string_retain_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('q.t1.x'))) self._assert_fk(t2, None, "q.t1.x") Table('t1', m, Column('x', Integer), schema='q') self._assert_fk(t2, None, "q.t1.x") def test_fk_has_schema_string_new_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('q.t1.x'))) self._assert_fk(t2, "z", "q.t1.x") Table('t1', m, Column('x', Integer), schema='q') self._assert_fk(t2, "z", "q.t1.x") def test_fk_has_schema_col_retain_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='q') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x))) self._assert_fk(t2, "z", "q.t1.x") def test_fk_has_schema_col_new_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='q') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x))) self._assert_fk(t2, "z", "q.t1.x") def test_fk_and_referent_has_same_schema_string_retain_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('q.t1.x')), schema="q") self._assert_fk(t2, None, "q.t1.x") Table('t1', m, Column('x', Integer), schema='q') self._assert_fk(t2, None, "q.t1.x") def test_fk_and_referent_has_same_schema_string_new_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('q.t1.x')), schema="q") self._assert_fk(t2, "z", "z.t1.x") Table('t1', m, Column('x', Integer), schema='q') self._assert_fk(t2, "z", "z.t1.x") def test_fk_and_referent_has_same_schema_col_retain_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='q') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x)), schema='q') self._assert_fk(t2, None, "q.t1.x") def test_fk_and_referent_has_same_schema_col_new_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='q') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x)), schema='q') self._assert_fk(t2, 'z', "z.t1.x") def test_fk_and_referent_has_diff_schema_string_retain_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('p.t1.x')), schema="q") self._assert_fk(t2, None, "p.t1.x") Table('t1', m, Column('x', Integer), schema='p') self._assert_fk(t2, None, "p.t1.x") def test_fk_and_referent_has_diff_schema_string_new_schema(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('p.t1.x')), schema="q") self._assert_fk(t2, "z", "p.t1.x") Table('t1', m, Column('x', Integer), schema='p') self._assert_fk(t2, "z", "p.t1.x") def test_fk_and_referent_has_diff_schema_col_retain_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='p') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x)), schema='q') self._assert_fk(t2, None, "p.t1.x") def test_fk_and_referent_has_diff_schema_col_new_schema(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema='p') t2 = Table('t2', m, Column('y', Integer, ForeignKey(t1.c.x)), schema='q') self._assert_fk(t2, 'z', "p.t1.x") def test_fk_custom_system(self): m = MetaData() t2 = Table('t2', m, Column('y', Integer, ForeignKey('p.t1.x')), schema='q') def ref_fn(table, to_schema, constraint, referred_schema): assert table is t2 eq_(to_schema, "z") eq_(referred_schema, "p") return "h" self._assert_fk(t2, 'z', "h.t1.x", referred_schema_fn=ref_fn) def test_copy_info(self): m = MetaData() fk = ForeignKey('t2.id') c = Column('c', Integer, fk) ck = CheckConstraint('c > 5') t = Table('t', m, c, ck) m.info['minfo'] = True fk.info['fkinfo'] = True c.info['cinfo'] = True ck.info['ckinfo'] = True t.info['tinfo'] = True t.primary_key.info['pkinfo'] = True fkc = [const for const in t.constraints if isinstance(const, ForeignKeyConstraint)][0] fkc.info['fkcinfo'] = True m2 = MetaData() t2 = t.tometadata(m2) m.info['minfo'] = False fk.info['fkinfo'] = False c.info['cinfo'] = False ck.info['ckinfo'] = False t.primary_key.info['pkinfo'] = False fkc.info['fkcinfo'] = False eq_(m2.info, {}) eq_(t2.info, {"tinfo": True}) eq_(t2.c.c.info, {"cinfo": True}) eq_(list(t2.c.c.foreign_keys)[0].info, {"fkinfo": True}) eq_(t2.primary_key.info, {"pkinfo": True}) fkc2 = [const for const in t2.constraints if isinstance(const, ForeignKeyConstraint)][0] eq_(fkc2.info, {"fkcinfo": True}) ck2 = [const for const in t2.constraints if isinstance(const, CheckConstraint)][0] eq_(ck2.info, {"ckinfo": True}) def test_dialect_kwargs(self): meta = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), mysql_engine='InnoDB', ) meta2 = MetaData() table_c = table.tometadata(meta2) eq_(table.kwargs, {"mysql_engine": "InnoDB"}) eq_(table.kwargs, table_c.kwargs) def test_indexes(self): meta = MetaData() table = Table('mytable', meta, Column('id', Integer, primary_key=True), Column('data1', Integer, index=True), Column('data2', Integer), ) Index('multi', table.c.data1, table.c.data2), meta2 = MetaData() table_c = table.tometadata(meta2) def _get_key(i): return [i.name, i.unique] + \ sorted(i.kwargs.items()) + \ list(i.columns.keys()) eq_( sorted([_get_key(i) for i in table.indexes]), sorted([_get_key(i) for i in table_c.indexes]) ) @emits_warning("Table '.+' already exists within the given MetaData") def test_already_exists(self): meta1 = MetaData() table1 = Table('mytable', meta1, Column('myid', Integer, primary_key=True), ) meta2 = MetaData() table2 = Table('mytable', meta2, Column('yourid', Integer, primary_key=True), ) table_c = table1.tometadata(meta2) table_d = table2.tometadata(meta2) # d'oh! assert table_c is table_d def test_default_schema_metadata(self): meta = MetaData(schema='myschema') table = Table( 'mytable', meta, Column( 'myid', Integer, primary_key=True), Column( 'name', String(40), nullable=True), Column( 'description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), ) table2 = Table( 'othertable', meta, Column( 'id', Integer, primary_key=True), Column( 'myid', Integer, ForeignKey('myschema.mytable.myid')), ) meta2 = MetaData(schema='someschema') table_c = table.tometadata(meta2, schema=None) table2_c = table2.tometadata(meta2, schema=None) eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid == table2_c.c.myid)) eq_(str(table_c.join(table2_c).onclause), "someschema.mytable.myid = someschema.othertable.myid") def test_strip_schema(self): meta = MetaData() table = Table('mytable', meta, Column('myid', Integer, primary_key=True), Column('name', String(40), nullable=True), Column('description', String(30), CheckConstraint("description='hi'")), UniqueConstraint('name'), ) table2 = Table('othertable', meta, Column('id', Integer, primary_key=True), Column('myid', Integer, ForeignKey('mytable.myid')), ) meta2 = MetaData() table_c = table.tometadata(meta2, schema=None) table2_c = table2.tometadata(meta2, schema=None) eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid == table2_c.c.myid)) eq_(str(table_c.join(table2_c).onclause), 'mytable.myid = othertable.myid') def test_unique_true_flag(self): meta = MetaData() table = Table('mytable', meta, Column('x', Integer, unique=True)) m2 = MetaData() t2 = table.tometadata(m2) eq_( len([ const for const in t2.constraints if isinstance(const, UniqueConstraint)]), 1 ) def test_index_true_flag(self): meta = MetaData() table = Table('mytable', meta, Column('x', Integer, index=True)) m2 = MetaData() t2 = table.tometadata(m2) eq_(len(t2.indexes), 1) class InfoTest(fixtures.TestBase): def test_metadata_info(self): m1 = MetaData() eq_(m1.info, {}) m1 = MetaData(info={"foo": "bar"}) eq_(m1.info, {"foo": "bar"}) def test_foreignkey_constraint_info(self): fkc = ForeignKeyConstraint(['a'], ['b'], name='bar') eq_(fkc.info, {}) fkc = ForeignKeyConstraint( ['a'], ['b'], name='bar', info={"foo": "bar"}) eq_(fkc.info, {"foo": "bar"}) def test_foreignkey_info(self): fkc = ForeignKey('a') eq_(fkc.info, {}) fkc = ForeignKey('a', info={"foo": "bar"}) eq_(fkc.info, {"foo": "bar"}) def test_primarykey_constraint_info(self): pkc = PrimaryKeyConstraint('a', name='x') eq_(pkc.info, {}) pkc = PrimaryKeyConstraint('a', name='x', info={'foo': 'bar'}) eq_(pkc.info, {'foo': 'bar'}) def test_unique_constraint_info(self): uc = UniqueConstraint('a', name='x') eq_(uc.info, {}) uc = UniqueConstraint('a', name='x', info={'foo': 'bar'}) eq_(uc.info, {'foo': 'bar'}) def test_check_constraint_info(self): cc = CheckConstraint('foo=bar', name='x') eq_(cc.info, {}) cc = CheckConstraint('foo=bar', name='x', info={'foo': 'bar'}) eq_(cc.info, {'foo': 'bar'}) def test_index_info(self): ix = Index('x', 'a') eq_(ix.info, {}) ix = Index('x', 'a', info={'foo': 'bar'}) eq_(ix.info, {'foo': 'bar'}) def test_column_info(self): c = Column('x', Integer) eq_(c.info, {}) c = Column('x', Integer, info={'foo': 'bar'}) eq_(c.info, {'foo': 'bar'}) def test_table_info(self): t = Table('x', MetaData()) eq_(t.info, {}) t = Table('x', MetaData(), info={'foo': 'bar'}) eq_(t.info, {'foo': 'bar'}) class TableTest(fixtures.TestBase, AssertsCompiledSQL): @testing.requires.temporary_tables @testing.skip_if('mssql', 'different col format') def test_prefixes(self): from sqlalchemy import Table table1 = Table("temporary_table_1", MetaData(), Column("col1", Integer), prefixes=["TEMPORARY"]) self.assert_compile( schema.CreateTable(table1), "CREATE TEMPORARY TABLE temporary_table_1 (col1 INTEGER)" ) table2 = Table("temporary_table_2", MetaData(), Column("col1", Integer), prefixes=["VIRTUAL"]) self.assert_compile( schema.CreateTable(table2), "CREATE VIRTUAL TABLE temporary_table_2 (col1 INTEGER)" ) def test_table_info(self): metadata = MetaData() t1 = Table('foo', metadata, info={'x': 'y'}) t2 = Table('bar', metadata, info={}) t3 = Table('bat', metadata) assert t1.info == {'x': 'y'} assert t2.info == {} assert t3.info == {} for t in (t1, t2, t3): t.info['bar'] = 'zip' assert t.info['bar'] == 'zip' def test_reset_exported_passes(self): m = MetaData() t = Table('t', m, Column('foo', Integer)) eq_( list(t.c), [t.c.foo] ) t._reset_exported() eq_( list(t.c), [t.c.foo] ) def test_foreign_key_constraints_collection(self): metadata = MetaData() t1 = Table('foo', metadata, Column('a', Integer)) eq_(t1.foreign_key_constraints, set()) fk1 = ForeignKey('q.id') fk2 = ForeignKey('j.id') fk3 = ForeignKeyConstraint(['b', 'c'], ['r.x', 'r.y']) t1.append_column(Column('b', Integer, fk1)) eq_( t1.foreign_key_constraints, set([fk1.constraint])) t1.append_column(Column('c', Integer, fk2)) eq_( t1.foreign_key_constraints, set([fk1.constraint, fk2.constraint])) t1.append_constraint(fk3) eq_( t1.foreign_key_constraints, set([fk1.constraint, fk2.constraint, fk3])) def test_c_immutable(self): m = MetaData() t1 = Table('t', m, Column('x', Integer), Column('y', Integer)) assert_raises( TypeError, t1.c.extend, [Column('z', Integer)] ) def assign(): t1.c['z'] = Column('z', Integer) assert_raises( TypeError, assign ) def assign2(): t1.c.z = Column('z', Integer) assert_raises( TypeError, assign2 ) def test_c_mutate_after_unpickle(self): m = MetaData() y = Column('y', Integer) t1 = Table('t', m, Column('x', Integer), y) t2 = pickle.loads(pickle.dumps(t1)) z = Column('z', Integer) g = Column('g', Integer) t2.append_column(z) is_(t1.c.contains_column(y), True) is_(t2.c.contains_column(y), False) y2 = t2.c.y is_(t2.c.contains_column(y2), True) is_(t2.c.contains_column(z), True) is_(t2.c.contains_column(g), False) def test_autoincrement_replace(self): m = MetaData() t = Table('t', m, Column('id', Integer, primary_key=True) ) is_(t._autoincrement_column, t.c.id) t = Table('t', m, Column('id', Integer, primary_key=True), extend_existing=True ) is_(t._autoincrement_column, t.c.id) def test_pk_args_standalone(self): m = MetaData() t = Table('t', m, Column('x', Integer, primary_key=True), PrimaryKeyConstraint(mssql_clustered=True) ) eq_( list(t.primary_key), [t.c.x] ) eq_( t.primary_key.dialect_kwargs, {"mssql_clustered": True} ) def test_pk_cols_sets_flags(self): m = MetaData() t = Table('t', m, Column('x', Integer), Column('y', Integer), Column('z', Integer), PrimaryKeyConstraint('x', 'y') ) eq_(t.c.x.primary_key, True) eq_(t.c.y.primary_key, True) eq_(t.c.z.primary_key, False) def test_pk_col_mismatch_one(self): m = MetaData() assert_raises_message( exc.SAWarning, "Table 't' specifies columns 'x' as primary_key=True, " "not matching locally specified columns 'q'", Table, 't', m, Column('x', Integer, primary_key=True), Column('q', Integer), PrimaryKeyConstraint('q') ) def test_pk_col_mismatch_two(self): m = MetaData() assert_raises_message( exc.SAWarning, "Table 't' specifies columns 'a', 'b', 'c' as primary_key=True, " "not matching locally specified columns 'b', 'c'", Table, 't', m, Column('a', Integer, primary_key=True), Column('b', Integer, primary_key=True), Column('c', Integer, primary_key=True), PrimaryKeyConstraint('b', 'c') ) @testing.emits_warning("Table 't'") def test_pk_col_mismatch_three(self): m = MetaData() t = Table('t', m, Column('x', Integer, primary_key=True), Column('q', Integer), PrimaryKeyConstraint('q') ) eq_(list(t.primary_key), [t.c.q]) @testing.emits_warning("Table 't'") def test_pk_col_mismatch_four(self): m = MetaData() t = Table('t', m, Column('a', Integer, primary_key=True), Column('b', Integer, primary_key=True), Column('c', Integer, primary_key=True), PrimaryKeyConstraint('b', 'c') ) eq_(list(t.primary_key), [t.c.b, t.c.c]) def test_pk_always_flips_nullable(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), PrimaryKeyConstraint('x')) t2 = Table('t2', m, Column('x', Integer, primary_key=True)) eq_(list(t1.primary_key), [t1.c.x]) eq_(list(t2.primary_key), [t2.c.x]) assert t1.c.x.primary_key assert t2.c.x.primary_key assert not t2.c.x.nullable assert not t1.c.x.nullable class SchemaTypeTest(fixtures.TestBase): class MyType(sqltypes.SchemaType, sqltypes.TypeEngine): column = None table = None evt_targets = () def _set_table(self, column, table): super(SchemaTypeTest.MyType, self)._set_table(column, table) self.column = column self.table = table def _on_table_create(self, target, bind, **kw): super(SchemaTypeTest.MyType, self)._on_table_create( target, bind, **kw) self.evt_targets += (target,) def _on_metadata_create(self, target, bind, **kw): super(SchemaTypeTest.MyType, self)._on_metadata_create( target, bind, **kw) self.evt_targets += (target,) class MyTypeWImpl(MyType): def _gen_dialect_impl(self, dialect): return self.adapt(SchemaTypeTest.MyTypeImpl) class MyTypeImpl(MyTypeWImpl): pass def test_independent_schema(self): m = MetaData() type_ = self.MyType(schema="q") t1 = Table('x', m, Column("y", type_), schema="z") eq_(t1.c.y.type.schema, "q") def test_inherit_schema(self): m = MetaData() type_ = self.MyType(schema="q", inherit_schema=True) t1 = Table('x', m, Column("y", type_), schema="z") eq_(t1.c.y.type.schema, "z") def test_independent_schema_enum(self): m = MetaData() type_ = sqltypes.Enum("a", schema="q") t1 = Table('x', m, Column("y", type_), schema="z") eq_(t1.c.y.type.schema, "q") def test_inherit_schema_enum(self): m = MetaData() type_ = sqltypes.Enum("a", "b", "c", schema="q", inherit_schema=True) t1 = Table('x', m, Column("y", type_), schema="z") eq_(t1.c.y.type.schema, "z") def test_tometadata_copy_type(self): m1 = MetaData() type_ = self.MyType() t1 = Table('x', m1, Column("y", type_)) m2 = MetaData() t2 = t1.tometadata(m2) # metadata isn't set is_(t2.c.y.type.metadata, None) # our test type sets table, though is_(t2.c.y.type.table, t2) def test_tometadata_independent_schema(self): m1 = MetaData() type_ = self.MyType() t1 = Table('x', m1, Column("y", type_)) m2 = MetaData() t2 = t1.tometadata(m2, schema="bar") eq_(t2.c.y.type.schema, None) def test_tometadata_inherit_schema(self): m1 = MetaData() type_ = self.MyType(inherit_schema=True) t1 = Table('x', m1, Column("y", type_)) m2 = MetaData() t2 = t1.tometadata(m2, schema="bar") eq_(t1.c.y.type.schema, None) eq_(t2.c.y.type.schema, "bar") def test_tometadata_independent_events(self): m1 = MetaData() type_ = self.MyType() t1 = Table('x', m1, Column("y", type_)) m2 = MetaData() t2 = t1.tometadata(m2) t1.dispatch.before_create(t1, testing.db) eq_(t1.c.y.type.evt_targets, (t1,)) eq_(t2.c.y.type.evt_targets, ()) t2.dispatch.before_create(t2, testing.db) t2.dispatch.before_create(t2, testing.db) eq_(t1.c.y.type.evt_targets, (t1,)) eq_(t2.c.y.type.evt_targets, (t2, t2)) def test_metadata_dispatch_no_new_impl(self): m1 = MetaData() typ = self.MyType(metadata=m1) m1.dispatch.before_create(m1, testing.db) eq_(typ.evt_targets, (m1, )) dialect_impl = typ.dialect_impl(testing.db.dialect) eq_(dialect_impl.evt_targets, ()) def test_metadata_dispatch_new_impl(self): m1 = MetaData() typ = self.MyTypeWImpl(metadata=m1) m1.dispatch.before_create(m1, testing.db) eq_(typ.evt_targets, (m1, )) dialect_impl = typ.dialect_impl(testing.db.dialect) eq_(dialect_impl.evt_targets, (m1, )) def test_table_dispatch_no_new_impl(self): m1 = MetaData() typ = self.MyType() t1 = Table('t1', m1, Column('x', typ)) m1.dispatch.before_create(t1, testing.db) eq_(typ.evt_targets, (t1, )) dialect_impl = typ.dialect_impl(testing.db.dialect) eq_(dialect_impl.evt_targets, ()) def test_table_dispatch_new_impl(self): m1 = MetaData() typ = self.MyTypeWImpl() t1 = Table('t1', m1, Column('x', typ)) m1.dispatch.before_create(t1, testing.db) eq_(typ.evt_targets, (t1, )) dialect_impl = typ.dialect_impl(testing.db.dialect) eq_(dialect_impl.evt_targets, (t1, )) def test_create_metadata_bound_no_crash(self): m1 = MetaData() self.MyType(metadata=m1) m1.create_all(testing.db) def test_boolean_constraint_type_doesnt_double(self): m1 = MetaData() t1 = Table('x', m1, Column("flag", Boolean())) eq_( len([ c for c in t1.constraints if isinstance(c, CheckConstraint)]), 1 ) m2 = MetaData() t2 = t1.tometadata(m2) eq_( len([ c for c in t2.constraints if isinstance(c, CheckConstraint)]), 1 ) def test_enum_constraint_type_doesnt_double(self): m1 = MetaData() t1 = Table('x', m1, Column("flag", Enum('a', 'b', 'c'))) eq_( len([ c for c in t1.constraints if isinstance(c, CheckConstraint)]), 1 ) m2 = MetaData() t2 = t1.tometadata(m2) eq_( len([ c for c in t2.constraints if isinstance(c, CheckConstraint)]), 1 ) class SchemaTest(fixtures.TestBase, AssertsCompiledSQL): def test_default_schema_metadata_fk(self): m = MetaData(schema="foo") t1 = Table('t1', m, Column('x', Integer)) t2 = Table('t2', m, Column('x', Integer, ForeignKey('t1.x'))) assert t2.c.x.references(t1.c.x) def test_ad_hoc_schema_equiv_fk(self): m = MetaData() t1 = Table('t1', m, Column('x', Integer), schema="foo") t2 = Table( 't2', m, Column( 'x', Integer, ForeignKey('t1.x')), schema="foo") assert_raises( exc.NoReferencedTableError, lambda: t2.c.x.references(t1.c.x) ) def test_default_schema_metadata_fk_alt_remote(self): m = MetaData(schema="foo") t1 = Table('t1', m, Column('x', Integer)) t2 = Table('t2', m, Column('x', Integer, ForeignKey('t1.x')), schema="bar") assert t2.c.x.references(t1.c.x) def test_default_schema_metadata_fk_alt_local_raises(self): m = MetaData(schema="foo") t1 = Table('t1', m, Column('x', Integer), schema="bar") t2 = Table('t2', m, Column('x', Integer, ForeignKey('t1.x'))) assert_raises( exc.NoReferencedTableError, lambda: t2.c.x.references(t1.c.x) ) def test_default_schema_metadata_fk_alt_local(self): m = MetaData(schema="foo") t1 = Table('t1', m, Column('x', Integer), schema="bar") t2 = Table('t2', m, Column('x', Integer, ForeignKey('bar.t1.x'))) assert t2.c.x.references(t1.c.x) def test_create_drop_schema(self): self.assert_compile( schema.CreateSchema("sa_schema"), "CREATE SCHEMA sa_schema" ) self.assert_compile( schema.DropSchema("sa_schema"), "DROP SCHEMA sa_schema" ) self.assert_compile( schema.DropSchema("sa_schema", cascade=True), "DROP SCHEMA sa_schema CASCADE" ) def test_iteration(self): metadata = MetaData() table1 = Table( 'table1', metadata, Column( 'col1', Integer, primary_key=True), schema='someschema') table2 = Table( 'table2', metadata, Column( 'col1', Integer, primary_key=True), Column( 'col2', Integer, ForeignKey('someschema.table1.col1')), schema='someschema') t1 = str(schema.CreateTable(table1).compile(bind=testing.db)) t2 = str(schema.CreateTable(table2).compile(bind=testing.db)) if testing.db.dialect.preparer(testing.db.dialect).omit_schema: assert t1.index("CREATE TABLE table1") > -1 assert t2.index("CREATE TABLE table2") > -1 else: assert t1.index("CREATE TABLE someschema.table1") > -1 assert t2.index("CREATE TABLE someschema.table2") > -1 class UseExistingTest(fixtures.TablesTest): @classmethod def define_tables(cls, metadata): Table('users', metadata, Column('id', Integer, primary_key=True), Column('name', String(30))) def _useexisting_fixture(self): meta2 = MetaData(testing.db) Table('users', meta2, autoload=True) return meta2 def _notexisting_fixture(self): return MetaData(testing.db) def test_exception_no_flags(self): meta2 = self._useexisting_fixture() def go(): Table('users', meta2, Column('name', Unicode), autoload=True) assert_raises_message( exc.InvalidRequestError, "Table 'users' is already defined for this " "MetaData instance.", go ) def test_keep_plus_existing_raises(self): meta2 = self._useexisting_fixture() assert_raises( exc.ArgumentError, Table, 'users', meta2, keep_existing=True, extend_existing=True ) @testing.uses_deprecated() def test_existing_plus_useexisting_raises(self): meta2 = self._useexisting_fixture() assert_raises( exc.ArgumentError, Table, 'users', meta2, useexisting=True, extend_existing=True ) def test_keep_existing_no_dupe_constraints(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('id', Integer), Column('name', Unicode), UniqueConstraint('name'), keep_existing=True ) assert 'name' in users.c assert 'id' in users.c eq_(len(users.constraints), 2) u2 = Table('users', meta2, Column('id', Integer), Column('name', Unicode), UniqueConstraint('name'), keep_existing=True ) eq_(len(u2.constraints), 2) def test_extend_existing_dupes_constraints(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('id', Integer), Column('name', Unicode), UniqueConstraint('name'), extend_existing=True ) assert 'name' in users.c assert 'id' in users.c eq_(len(users.constraints), 2) u2 = Table('users', meta2, Column('id', Integer), Column('name', Unicode), UniqueConstraint('name'), extend_existing=True ) # constraint got duped eq_(len(u2.constraints), 3) def test_keep_existing_coltype(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('name', Unicode), autoload=True, keep_existing=True) assert not isinstance(users.c.name.type, Unicode) def test_keep_existing_quote(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, quote=True, autoload=True, keep_existing=True) assert not users.name.quote def test_keep_existing_add_column(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('foo', Integer), autoload=True, keep_existing=True) assert "foo" not in users.c def test_keep_existing_coltype_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('name', Unicode), autoload=True, keep_existing=True) assert isinstance(users.c.name.type, Unicode) @testing.skip_if( lambda: testing.db.dialect.requires_name_normalize, "test depends on lowercase as case insensitive") def test_keep_existing_quote_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, quote=True, autoload=True, keep_existing=True) assert users.name.quote def test_keep_existing_add_column_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('foo', Integer), autoload=True, keep_existing=True) assert "foo" in users.c def test_keep_existing_coltype_no_reflection(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('name', Unicode), keep_existing=True) assert not isinstance(users.c.name.type, Unicode) def test_keep_existing_quote_no_reflection(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, quote=True, keep_existing=True) assert not users.name.quote def test_keep_existing_add_column_no_reflection(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('foo', Integer), keep_existing=True) assert "foo" not in users.c def test_extend_existing_coltype(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('name', Unicode), autoload=True, extend_existing=True) assert isinstance(users.c.name.type, Unicode) def test_extend_existing_quote(self): meta2 = self._useexisting_fixture() assert_raises_message( tsa.exc.ArgumentError, "Can't redefine 'quote' or 'quote_schema' arguments", Table, 'users', meta2, quote=True, autoload=True, extend_existing=True ) def test_extend_existing_add_column(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('foo', Integer), autoload=True, extend_existing=True) assert "foo" in users.c def test_extend_existing_coltype_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('name', Unicode), autoload=True, extend_existing=True) assert isinstance(users.c.name.type, Unicode) @testing.skip_if( lambda: testing.db.dialect.requires_name_normalize, "test depends on lowercase as case insensitive") def test_extend_existing_quote_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, quote=True, autoload=True, extend_existing=True) assert users.name.quote def test_extend_existing_add_column_no_orig(self): meta2 = self._notexisting_fixture() users = Table('users', meta2, Column('foo', Integer), autoload=True, extend_existing=True) assert "foo" in users.c def test_extend_existing_coltype_no_reflection(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('name', Unicode), extend_existing=True) assert isinstance(users.c.name.type, Unicode) def test_extend_existing_quote_no_reflection(self): meta2 = self._useexisting_fixture() assert_raises_message( tsa.exc.ArgumentError, "Can't redefine 'quote' or 'quote_schema' arguments", Table, 'users', meta2, quote=True, extend_existing=True ) def test_extend_existing_add_column_no_reflection(self): meta2 = self._useexisting_fixture() users = Table('users', meta2, Column('foo', Integer), extend_existing=True) assert "foo" in users.c class IndexTest(fixtures.TestBase): def _assert(self, t, i, columns=True): eq_(t.indexes, set([i])) if columns: eq_(list(i.columns), [t.c.x]) else: eq_(list(i.columns), []) assert i.table is t def test_separate_decl_columns(self): m = MetaData() t = Table('t', m, Column('x', Integer)) i = Index('i', t.c.x) self._assert(t, i) def test_separate_decl_columns_functional(self): m = MetaData() t = Table('t', m, Column('x', Integer)) i = Index('i', func.foo(t.c.x)) self._assert(t, i) def test_inline_decl_columns(self): m = MetaData() c = Column('x', Integer) i = Index('i', c) t = Table('t', m, c, i) self._assert(t, i) def test_inline_decl_columns_functional(self): m = MetaData() c = Column('x', Integer) i = Index('i', func.foo(c)) t = Table('t', m, c, i) self._assert(t, i) def test_inline_decl_string(self): m = MetaData() i = Index('i', "x") t = Table('t', m, Column('x', Integer), i) self._assert(t, i) def test_inline_decl_textonly(self): m = MetaData() i = Index('i', text("foobar(x)")) t = Table('t', m, Column('x', Integer), i) self._assert(t, i, columns=False) def test_separate_decl_textonly(self): m = MetaData() i = Index('i', text("foobar(x)")) t = Table('t', m, Column('x', Integer)) t.append_constraint(i) self._assert(t, i, columns=False) def test_unnamed_column_exception(self): # this can occur in some declarative situations c = Column(Integer) idx = Index('q', c) m = MetaData() t = Table('t', m, Column('q')) assert_raises_message( exc.ArgumentError, "Can't add unnamed column to column collection", t.append_constraint, idx ) class ConstraintTest(fixtures.TestBase): def _single_fixture(self): m = MetaData() t1 = Table('t1', m, Column('a', Integer), Column('b', Integer) ) t2 = Table('t2', m, Column('a', Integer, ForeignKey('t1.a')) ) t3 = Table('t3', m, Column('a', Integer) ) return t1, t2, t3 def test_table_references(self): t1, t2, t3 = self._single_fixture() assert list(t2.c.a.foreign_keys)[0].references(t1) assert not list(t2.c.a.foreign_keys)[0].references(t3) def test_column_references(self): t1, t2, t3 = self._single_fixture() assert t2.c.a.references(t1.c.a) assert not t2.c.a.references(t3.c.a) assert not t2.c.a.references(t1.c.b) def test_column_references_derived(self): t1, t2, t3 = self._single_fixture() s1 = tsa.select([tsa.select([t1]).alias()]) assert t2.c.a.references(s1.c.a) assert not t2.c.a.references(s1.c.b) def test_copy_doesnt_reference(self): t1, t2, t3 = self._single_fixture() a2 = t2.c.a.copy() assert not a2.references(t1.c.a) assert not a2.references(t1.c.b) def test_derived_column_references(self): t1, t2, t3 = self._single_fixture() s1 = tsa.select([tsa.select([t2]).alias()]) assert s1.c.a.references(t1.c.a) assert not s1.c.a.references(t1.c.b) def test_referred_table_accessor(self): t1, t2, t3 = self._single_fixture() fkc = list(t2.foreign_key_constraints)[0] is_(fkc.referred_table, t1) def test_referred_table_accessor_not_available(self): t1 = Table('t', MetaData(), Column('x', ForeignKey('q.id'))) fkc = list(t1.foreign_key_constraints)[0] assert_raises_message( exc.InvalidRequestError, "Foreign key associated with column 't.x' could not find " "table 'q' with which to generate a foreign key to target " "column 'id'", getattr, fkc, "referred_table" ) def test_related_column_not_present_atfirst_ok(self): m = MetaData() base_table = Table("base", m, Column("id", Integer, primary_key=True) ) fk = ForeignKey('base.q') derived_table = Table("derived", m, Column("id", None, fk, primary_key=True), ) base_table.append_column(Column('q', Integer)) assert fk.column is base_table.c.q assert isinstance(derived_table.c.id.type, Integer) def test_related_column_not_present_atfirst_ok_onname(self): m = MetaData() base_table = Table("base", m, Column("id", Integer, primary_key=True) ) fk = ForeignKey('base.q', link_to_name=True) derived_table = Table("derived", m, Column("id", None, fk, primary_key=True), ) base_table.append_column(Column('q', Integer, key='zz')) assert fk.column is base_table.c.zz assert isinstance(derived_table.c.id.type, Integer) def test_related_column_not_present_atfirst_ok_linktoname_conflict(self): m = MetaData() base_table = Table("base", m, Column("id", Integer, primary_key=True) ) fk = ForeignKey('base.q', link_to_name=True) derived_table = Table("derived", m, Column("id", None, fk, primary_key=True), ) base_table.append_column(Column('zz', Integer, key='q')) base_table.append_column(Column('q', Integer, key='zz')) assert fk.column is base_table.c.zz assert isinstance(derived_table.c.id.type, Integer) def test_invalid_composite_fk_check_strings(self): m = MetaData() assert_raises_message( exc.ArgumentError, r"ForeignKeyConstraint on t1\(x, y\) refers to " "multiple remote tables: t2 and t3", Table, 't1', m, Column('x', Integer), Column('y', Integer), ForeignKeyConstraint(['x', 'y'], ['t2.x', 't3.y']) ) def test_invalid_composite_fk_check_columns(self): m = MetaData() t2 = Table('t2', m, Column('x', Integer)) t3 = Table('t3', m, Column('y', Integer)) assert_raises_message( exc.ArgumentError, r"ForeignKeyConstraint on t1\(x, y\) refers to " "multiple remote tables: t2 and t3", Table, 't1', m, Column('x', Integer), Column('y', Integer), ForeignKeyConstraint(['x', 'y'], [t2.c.x, t3.c.y]) ) def test_invalid_composite_fk_check_columns_notattached(self): m = MetaData() x = Column('x', Integer) y = Column('y', Integer) # no error is raised for this one right now. # which is a minor bug. Table('t1', m, Column('x', Integer), Column('y', Integer), ForeignKeyConstraint(['x', 'y'], [x, y]) ) Table('t2', m, x) Table('t3', m, y) def test_constraint_copied_to_proxy_ok(self): m = MetaData() Table('t1', m, Column('id', Integer, primary_key=True)) t2 = Table('t2', m, Column('id', Integer, ForeignKey('t1.id'), primary_key=True)) s = tsa.select([t2]) t2fk = list(t2.c.id.foreign_keys)[0] sfk = list(s.c.id.foreign_keys)[0] # the two FKs share the ForeignKeyConstraint is_( t2fk.constraint, sfk.constraint ) # but the ForeignKeyConstraint isn't # aware of the select's FK eq_( t2fk.constraint.elements, [t2fk] ) def test_type_propagate_composite_fk_string(self): metadata = MetaData() Table( 'a', metadata, Column('key1', Integer, primary_key=True), Column('key2', String(40), primary_key=True)) b = Table('b', metadata, Column('a_key1', None), Column('a_key2', None), Column('id', Integer, primary_key=True), ForeignKeyConstraint(['a_key1', 'a_key2'], ['a.key1', 'a.key2']) ) assert isinstance(b.c.a_key1.type, Integer) assert isinstance(b.c.a_key2.type, String) def test_type_propagate_composite_fk_col(self): metadata = MetaData() a = Table('a', metadata, Column('key1', Integer, primary_key=True), Column('key2', String(40), primary_key=True)) b = Table('b', metadata, Column('a_key1', None), Column('a_key2', None), Column('id', Integer, primary_key=True), ForeignKeyConstraint(['a_key1', 'a_key2'], [a.c.key1, a.c.key2]) ) assert isinstance(b.c.a_key1.type, Integer) assert isinstance(b.c.a_key2.type, String) def test_type_propagate_standalone_fk_string(self): metadata = MetaData() Table( 'a', metadata, Column('key1', Integer, primary_key=True)) b = Table('b', metadata, Column('a_key1', None, ForeignKey("a.key1")), ) assert isinstance(b.c.a_key1.type, Integer) def test_type_propagate_standalone_fk_col(self): metadata = MetaData() a = Table('a', metadata, Column('key1', Integer, primary_key=True)) b = Table('b', metadata, Column('a_key1', None, ForeignKey(a.c.key1)), ) assert isinstance(b.c.a_key1.type, Integer) def test_type_propagate_chained_string_source_first(self): metadata = MetaData() Table( 'a', metadata, Column('key1', Integer, primary_key=True) ) b = Table('b', metadata, Column('a_key1', None, ForeignKey("a.key1")), ) c = Table('c', metadata, Column('b_key1', None, ForeignKey("b.a_key1")), ) assert isinstance(b.c.a_key1.type, Integer) assert isinstance(c.c.b_key1.type, Integer) def test_type_propagate_chained_string_source_last(self): metadata = MetaData() b = Table('b', metadata, Column('a_key1', None, ForeignKey("a.key1")), ) c = Table('c', metadata, Column('b_key1', None, ForeignKey("b.a_key1")), ) Table( 'a', metadata, Column('key1', Integer, primary_key=True)) assert isinstance(b.c.a_key1.type, Integer) assert isinstance(c.c.b_key1.type, Integer) def test_type_propagate_chained_string_source_last_onname(self): metadata = MetaData() b = Table('b', metadata, Column( 'a_key1', None, ForeignKey("a.key1", link_to_name=True), key="ak1"), ) c = Table('c', metadata, Column( 'b_key1', None, ForeignKey("b.a_key1", link_to_name=True), key="bk1"), ) Table( 'a', metadata, Column('key1', Integer, primary_key=True, key='ak1')) assert isinstance(b.c.ak1.type, Integer) assert isinstance(c.c.bk1.type, Integer) def test_type_propagate_chained_string_source_last_onname_conflict(self): metadata = MetaData() b = Table('b', metadata, # b.c.key1 -> a.c.key1 -> String Column( 'ak1', None, ForeignKey("a.key1", link_to_name=False), key="key1"), # b.c.ak1 -> a.c.ak1 -> Integer Column( 'a_key1', None, ForeignKey("a.key1", link_to_name=True), key="ak1"), ) c = Table('c', metadata, # c.c.b_key1 -> b.c.ak1 -> Integer Column( 'b_key1', None, ForeignKey("b.ak1", link_to_name=False)), # c.c.b_ak1 -> b.c.ak1 Column( 'b_ak1', None, ForeignKey("b.ak1", link_to_name=True)), ) Table( 'a', metadata, # a.c.key1 Column('ak1', String, key="key1"), # a.c.ak1 Column('key1', Integer, primary_key=True, key='ak1'), ) assert isinstance(b.c.key1.type, String) assert isinstance(b.c.ak1.type, Integer) assert isinstance(c.c.b_ak1.type, String) assert isinstance(c.c.b_key1.type, Integer) def test_type_propagate_chained_col_orig_first(self): metadata = MetaData() a = Table('a', metadata, Column('key1', Integer, primary_key=True)) b = Table('b', metadata, Column('a_key1', None, ForeignKey(a.c.key1)), ) c = Table('c', metadata, Column('b_key1', None, ForeignKey(b.c.a_key1)), ) assert isinstance(b.c.a_key1.type, Integer) assert isinstance(c.c.b_key1.type, Integer) def test_column_accessor_col(self): c1 = Column('x', Integer) fk = ForeignKey(c1) is_(fk.column, c1) def test_column_accessor_clause_element(self): c1 = Column('x', Integer) class CThing(object): def __init__(self, c): self.c = c def __clause_element__(self): return self.c fk = ForeignKey(CThing(c1)) is_(fk.column, c1) def test_column_accessor_string_no_parent(self): fk = ForeignKey("sometable.somecol") assert_raises_message( exc.InvalidRequestError, "this ForeignKey object does not yet have a parent " "Column associated with it.", getattr, fk, "column" ) def test_column_accessor_string_no_parent_table(self): fk = ForeignKey("sometable.somecol") Column('x', fk) assert_raises_message( exc.InvalidRequestError, "this ForeignKey's parent column is not yet " "associated with a Table.", getattr, fk, "column" ) def test_column_accessor_string_no_target_table(self): fk = ForeignKey("sometable.somecol") c1 = Column('x', fk) Table('t', MetaData(), c1) assert_raises_message( exc.NoReferencedTableError, "Foreign key associated with column 't.x' could not find " "table 'sometable' with which to generate a " "foreign key to target column 'somecol'", getattr, fk, "column" ) def test_column_accessor_string_no_target_column(self): fk = ForeignKey("sometable.somecol") c1 = Column('x', fk) m = MetaData() Table('t', m, c1) Table("sometable", m, Column('notsomecol', Integer)) assert_raises_message( exc.NoReferencedColumnError, "Could not initialize target column for ForeignKey " "'sometable.somecol' on table 't': " "table 'sometable' has no column named 'somecol'", getattr, fk, "column" ) def test_remove_table_fk_bookkeeping(self): metadata = MetaData() fk = ForeignKey('t1.x') t2 = Table('t2', metadata, Column('y', Integer, fk)) t3 = Table('t3', metadata, Column('y', Integer, ForeignKey('t1.x'))) assert t2.key in metadata.tables assert ("t1", "x") in metadata._fk_memos metadata.remove(t2) # key is removed assert t2.key not in metadata.tables # the memo for the FK is still there assert ("t1", "x") in metadata._fk_memos # fk is not in the collection assert fk not in metadata._fk_memos[("t1", "x")] # make the referenced table t1 = Table('t1', metadata, Column('x', Integer)) # t2 tells us exactly what's wrong assert_raises_message( exc.InvalidRequestError, "Table t2 is no longer associated with its parent MetaData", getattr, fk, "column" ) # t3 is unaffected assert t3.c.y.references(t1.c.x) # remove twice OK metadata.remove(t2) class ColumnDefinitionTest(AssertsCompiledSQL, fixtures.TestBase): """Test Column() construction.""" __dialect__ = 'default' def columns(self): return [Column(Integer), Column('b', Integer), Column(Integer), Column('d', Integer), Column(Integer, name='e'), Column(type_=Integer), Column(Integer()), Column('h', Integer()), Column(type_=Integer())] def test_basic(self): c = self.columns() for i, v in ((0, 'a'), (2, 'c'), (5, 'f'), (6, 'g'), (8, 'i')): c[i].name = v c[i].key = v del i, v tbl = Table('table', MetaData(), *c) for i, col in enumerate(tbl.c): assert col.name == c[i].name def test_name_none(self): c = Column(Integer) assert_raises_message( exc.ArgumentError, "Column must be constructed with a non-blank name or assign a " "non-blank .name ", Table, 't', MetaData(), c) def test_name_blank(self): c = Column('', Integer) assert_raises_message( exc.ArgumentError, "Column must be constructed with a non-blank name or assign a " "non-blank .name ", Table, 't', MetaData(), c) def test_dupe_column(self): c = Column('x', Integer) Table('t', MetaData(), c) assert_raises_message( exc.ArgumentError, "Column object 'x' already assigned to Table 't'", Table, 'q', MetaData(), c) def test_incomplete_key(self): c = Column(Integer) assert c.name is None assert c.key is None c.name = 'named' Table('t', MetaData(), c) assert c.name == 'named' assert c.name == c.key def test_unique_index_flags_default_to_none(self): c = Column(Integer) eq_(c.unique, None) eq_(c.index, None) c = Column('c', Integer, index=True) eq_(c.unique, None) eq_(c.index, True) t = Table('t', MetaData(), c) eq_(list(t.indexes)[0].unique, False) c = Column(Integer, unique=True) eq_(c.unique, True) eq_(c.index, None) c = Column('c', Integer, index=True, unique=True) eq_(c.unique, True) eq_(c.index, True) t = Table('t', MetaData(), c) eq_(list(t.indexes)[0].unique, True) def test_bogus(self): assert_raises(exc.ArgumentError, Column, 'foo', name='bar') assert_raises(exc.ArgumentError, Column, 'foo', Integer, type_=Integer()) def test_custom_subclass_proxy(self): """test proxy generation of a Column subclass, can be compiled.""" from sqlalchemy.schema import Column from sqlalchemy.ext.compiler import compiles from sqlalchemy.sql import select class MyColumn(Column): def _constructor(self, name, type, **kw): kw['name'] = name return MyColumn(type, **kw) def __init__(self, type, **kw): Column.__init__(self, type, **kw) def my_goofy_thing(self): return "hi" @compiles(MyColumn) def goofy(element, compiler, **kw): s = compiler.visit_column(element, **kw) return s + "-" id = MyColumn(Integer, primary_key=True) id.name = 'id' name = MyColumn(String) name.name = 'name' t1 = Table('foo', MetaData(), id, name ) # goofy thing eq_(t1.c.name.my_goofy_thing(), "hi") # create proxy s = select([t1.select().alias()]) # proxy has goofy thing eq_(s.c.name.my_goofy_thing(), "hi") # compile works self.assert_compile( select([t1.select().alias()]), "SELECT anon_1.id-, anon_1.name- FROM " "(SELECT foo.id- AS id, foo.name- AS name " "FROM foo) AS anon_1", ) def test_custom_subclass_proxy_typeerror(self): from sqlalchemy.schema import Column from sqlalchemy.sql import select class MyColumn(Column): def __init__(self, type, **kw): Column.__init__(self, type, **kw) id = MyColumn(Integer, primary_key=True) id.name = 'id' name = MyColumn(String) name.name = 'name' t1 = Table('foo', MetaData(), id, name ) assert_raises_message( TypeError, "Could not create a copy of this " "object. Ensure the class includes a _constructor()", getattr, select([t1.select().alias()]), 'c' ) def test_custom_create(self): from sqlalchemy.ext.compiler import compiles, deregister @compiles(schema.CreateColumn) def compile(element, compiler, **kw): column = element.element if "special" not in column.info: return compiler.visit_create_column(element, **kw) text = "%s SPECIAL DIRECTIVE %s" % ( column.name, compiler.type_compiler.process(column.type) ) default = compiler.get_column_default_string(column) if default is not None: text += " DEFAULT " + default if not column.nullable: text += " NOT NULL" if column.constraints: text += " ".join( compiler.process(const) for const in column.constraints) return text t = Table( 'mytable', MetaData(), Column('x', Integer, info={ "special": True}, primary_key=True), Column('y', String(50)), Column('z', String(20), info={ "special": True})) self.assert_compile( schema.CreateTable(t), "CREATE TABLE mytable (x SPECIAL DIRECTIVE INTEGER " "NOT NULL, y VARCHAR(50), " "z SPECIAL DIRECTIVE VARCHAR(20), PRIMARY KEY (x))" ) deregister(schema.CreateColumn) class ColumnDefaultsTest(fixtures.TestBase): """test assignment of default fixures to columns""" def _fixture(self, *arg, **kw): return Column('x', Integer, *arg, **kw) def test_server_default_positional(self): target = schema.DefaultClause('y') c = self._fixture(target) assert c.server_default is target assert target.column is c def test_onupdate_default_not_server_default_one(self): target1 = schema.DefaultClause('y') target2 = schema.DefaultClause('z') c = self._fixture(server_default=target1, server_onupdate=target2) eq_(c.server_default.arg, 'y') eq_(c.server_onupdate.arg, 'z') def test_onupdate_default_not_server_default_two(self): target1 = schema.DefaultClause('y', for_update=True) target2 = schema.DefaultClause('z', for_update=True) c = self._fixture(server_default=target1, server_onupdate=target2) eq_(c.server_default.arg, 'y') eq_(c.server_onupdate.arg, 'z') def test_onupdate_default_not_server_default_three(self): target1 = schema.DefaultClause('y', for_update=False) target2 = schema.DefaultClause('z', for_update=True) c = self._fixture(target1, target2) eq_(c.server_default.arg, 'y') eq_(c.server_onupdate.arg, 'z') def test_onupdate_default_not_server_default_four(self): target1 = schema.DefaultClause('y', for_update=False) c = self._fixture(server_onupdate=target1) is_(c.server_default, None) eq_(c.server_onupdate.arg, 'y') def test_server_default_keyword_as_schemaitem(self): target = schema.DefaultClause('y') c = self._fixture(server_default=target) assert c.server_default is target assert target.column is c def test_server_default_keyword_as_clause(self): target = 'y' c = self._fixture(server_default=target) assert c.server_default.arg == target assert c.server_default.column is c def test_server_default_onupdate_positional(self): target = schema.DefaultClause('y', for_update=True) c = self._fixture(target) assert c.server_onupdate is target assert target.column is c def test_server_default_onupdate_keyword_as_schemaitem(self): target = schema.DefaultClause('y', for_update=True) c = self._fixture(server_onupdate=target) assert c.server_onupdate is target assert target.column is c def test_server_default_onupdate_keyword_as_clause(self): target = 'y' c = self._fixture(server_onupdate=target) assert c.server_onupdate.arg == target assert c.server_onupdate.column is c def test_column_default_positional(self): target = schema.ColumnDefault('y') c = self._fixture(target) assert c.default is target assert target.column is c def test_column_default_keyword_as_schemaitem(self): target = schema.ColumnDefault('y') c = self._fixture(default=target) assert c.default is target assert target.column is c def test_column_default_keyword_as_clause(self): target = 'y' c = self._fixture(default=target) assert c.default.arg == target assert c.default.column is c def test_column_default_onupdate_positional(self): target = schema.ColumnDefault('y', for_update=True) c = self._fixture(target) assert c.onupdate is target assert target.column is c def test_column_default_onupdate_keyword_as_schemaitem(self): target = schema.ColumnDefault('y', for_update=True) c = self._fixture(onupdate=target) assert c.onupdate is target assert target.column is c def test_column_default_onupdate_keyword_as_clause(self): target = 'y' c = self._fixture(onupdate=target) assert c.onupdate.arg == target assert c.onupdate.column is c class ColumnOptionsTest(fixtures.TestBase): def test_default_generators(self): g1, g2 = Sequence('foo_id_seq'), ColumnDefault('f5') assert Column(String, default=g1).default is g1 assert Column(String, onupdate=g1).onupdate is g1 assert Column(String, default=g2).default is g2 assert Column(String, onupdate=g2).onupdate is g2 def _null_type_error(self, col): t = Table('t', MetaData(), col) assert_raises_message( exc.CompileError, r"\(in table 't', column 'foo'\): Can't generate DDL for NullType", schema.CreateTable(t).compile ) def _no_name_error(self, col): assert_raises_message( exc.ArgumentError, "Column must be constructed with a non-blank name or " "assign a non-blank .name", Table, 't', MetaData(), col ) def _no_error(self, col): m = MetaData() b = Table('bar', m, Column('id', Integer)) t = Table('t', m, col) schema.CreateTable(t).compile() def test_argument_signatures(self): self._no_name_error(Column()) self._null_type_error(Column("foo")) self._no_name_error(Column(default="foo")) self._no_name_error(Column(Sequence("a"))) self._null_type_error(Column("foo", default="foo")) self._null_type_error(Column("foo", Sequence("a"))) self._no_name_error(Column(ForeignKey('bar.id'))) self._no_error(Column("foo", ForeignKey('bar.id'))) self._no_name_error(Column(ForeignKey('bar.id'), default="foo")) self._no_name_error(Column(ForeignKey('bar.id'), Sequence("a"))) self._no_error(Column("foo", ForeignKey('bar.id'), default="foo")) self._no_error(Column("foo", ForeignKey('bar.id'), Sequence("a"))) def test_column_info(self): c1 = Column('foo', String, info={'x': 'y'}) c2 = Column('bar', String, info={}) c3 = Column('bat', String) assert c1.info == {'x': 'y'} assert c2.info == {} assert c3.info == {} for c in (c1, c2, c3): c.info['bar'] = 'zip' assert c.info['bar'] == 'zip' class CatchAllEventsTest(fixtures.RemovesEvents, fixtures.TestBase): def test_all_events(self): canary = [] def before_attach(obj, parent): canary.append("%s->%s" % (obj.__class__.__name__, parent.__class__.__name__)) def after_attach(obj, parent): canary.append("%s->%s" % (obj.__class__.__name__, parent)) self.event_listen( schema.SchemaItem, "before_parent_attach", before_attach) self.event_listen( schema.SchemaItem, "after_parent_attach", after_attach) m = MetaData() Table('t1', m, Column('id', Integer, Sequence('foo_id'), primary_key=True), Column('bar', String, ForeignKey('t2.id')) ) Table('t2', m, Column('id', Integer, primary_key=True), ) eq_( canary, ['Sequence->Column', 'Sequence->id', 'ForeignKey->Column', 'ForeignKey->bar', 'Table->MetaData', 'PrimaryKeyConstraint->Table', 'PrimaryKeyConstraint->t1', 'Column->Table', 'Column->t1', 'Column->Table', 'Column->t1', 'ForeignKeyConstraint->Table', 'ForeignKeyConstraint->t1', 'Table->MetaData(bind=None)', 'Table->MetaData', 'PrimaryKeyConstraint->Table', 'PrimaryKeyConstraint->t2', 'Column->Table', 'Column->t2', 'Table->MetaData(bind=None)'] ) def test_events_per_constraint(self): canary = [] def evt(target): def before_attach(obj, parent): canary.append("%s->%s" % (target.__name__, parent.__class__.__name__)) def after_attach(obj, parent): assert hasattr(obj, 'name') # so we can change it canary.append("%s->%s" % (target.__name__, parent)) self.event_listen(target, "before_parent_attach", before_attach) self.event_listen(target, "after_parent_attach", after_attach) for target in [ schema.ForeignKeyConstraint, schema.PrimaryKeyConstraint, schema.UniqueConstraint, schema.CheckConstraint, schema.Index ]: evt(target) m = MetaData() Table('t1', m, Column('id', Integer, Sequence('foo_id'), primary_key=True), Column('bar', String, ForeignKey('t2.id'), index=True), Column('bat', Integer, unique=True), ) Table('t2', m, Column('id', Integer, primary_key=True), Column('bar', Integer), Column('bat', Integer), CheckConstraint("bar>5"), UniqueConstraint('bar', 'bat'), Index(None, 'bar', 'bat') ) eq_( canary, [ 'PrimaryKeyConstraint->Table', 'PrimaryKeyConstraint->t1', 'Index->Table', 'Index->t1', 'ForeignKeyConstraint->Table', 'ForeignKeyConstraint->t1', 'UniqueConstraint->Table', 'UniqueConstraint->t1', 'PrimaryKeyConstraint->Table', 'PrimaryKeyConstraint->t2', 'CheckConstraint->Table', 'CheckConstraint->t2', 'UniqueConstraint->Table', 'UniqueConstraint->t2', 'Index->Table', 'Index->t2' ] ) class DialectKWArgTest(fixtures.TestBase): @contextmanager def _fixture(self): from sqlalchemy.engine.default import DefaultDialect class ParticipatingDialect(DefaultDialect): construct_arguments = [ (schema.Index, { "x": 5, "y": False, "z_one": None }), (schema.ForeignKeyConstraint, { "foobar": False }) ] class ParticipatingDialect2(DefaultDialect): construct_arguments = [ (schema.Index, { "x": 9, "y": True, "pp": "default" }), (schema.Table, { "*": None }) ] class NonParticipatingDialect(DefaultDialect): construct_arguments = None def load(dialect_name): if dialect_name == "participating": return ParticipatingDialect elif dialect_name == "participating2": return ParticipatingDialect2 elif dialect_name == "nonparticipating": return NonParticipatingDialect else: raise exc.NoSuchModuleError("no dialect %r" % dialect_name) with mock.patch("sqlalchemy.dialects.registry.load", load): yield def teardown(self): Index._kw_registry.clear() def test_participating(self): with self._fixture(): idx = Index('a', 'b', 'c', participating_y=True) eq_( idx.dialect_options, {"participating": {"x": 5, "y": True, "z_one": None}} ) eq_( idx.dialect_kwargs, { 'participating_y': True, } ) def test_nonparticipating(self): with self._fixture(): idx = Index( 'a', 'b', 'c', nonparticipating_y=True, nonparticipating_q=5) eq_( idx.dialect_kwargs, { 'nonparticipating_y': True, 'nonparticipating_q': 5 } ) def test_bad_kwarg_raise(self): with self._fixture(): assert_raises_message( TypeError, "Additional arguments should be named " "_, got 'foobar'", Index, 'a', 'b', 'c', foobar=True ) def test_unknown_dialect_warning(self): with self._fixture(): assert_raises_message( exc.SAWarning, "Can't validate argument 'unknown_y'; can't locate " "any SQLAlchemy dialect named 'unknown'", Index, 'a', 'b', 'c', unknown_y=True ) def test_participating_bad_kw(self): with self._fixture(): assert_raises_message( exc.ArgumentError, "Argument 'participating_q_p_x' is not accepted by dialect " "'participating' on behalf of " "", Index, 'a', 'b', 'c', participating_q_p_x=8 ) def test_participating_unknown_schema_item(self): with self._fixture(): # the dialect doesn't include UniqueConstraint in # its registry at all. assert_raises_message( exc.ArgumentError, "Argument 'participating_q_p_x' is not accepted by dialect " "'participating' on behalf of " "", UniqueConstraint, 'a', 'b', participating_q_p_x=8 ) @testing.emits_warning("Can't validate") def test_unknown_dialect_warning_still_populates(self): with self._fixture(): idx = Index('a', 'b', 'c', unknown_y=True) eq_(idx.dialect_kwargs, {"unknown_y": True}) # still populates @testing.emits_warning("Can't validate") def test_unknown_dialect_warning_still_populates_multiple(self): with self._fixture(): idx = Index('a', 'b', 'c', unknown_y=True, unknown_z=5, otherunknown_foo='bar', participating_y=8) eq_( idx.dialect_options, { "unknown": {'y': True, 'z': 5, '*': None}, "otherunknown": {'foo': 'bar', '*': None}, "participating": {'x': 5, 'y': 8, 'z_one': None} } ) eq_(idx.dialect_kwargs, {'unknown_z': 5, 'participating_y': 8, 'unknown_y': True, 'otherunknown_foo': 'bar'} ) # still populates def test_runs_safekwarg(self): with mock.patch("sqlalchemy.util.safe_kwarg", lambda arg: "goofy_%s" % arg): with self._fixture(): idx = Index('a', 'b') idx.kwargs[util.u('participating_x')] = 7 eq_( list(idx.dialect_kwargs), ['goofy_participating_x'] ) def test_combined(self): with self._fixture(): idx = Index('a', 'b', 'c', participating_x=7, nonparticipating_y=True) eq_( idx.dialect_options, { 'participating': {'y': False, 'x': 7, 'z_one': None}, 'nonparticipating': {'y': True, '*': None} } ) eq_( idx.dialect_kwargs, { 'participating_x': 7, 'nonparticipating_y': True, } ) def test_multiple_participating(self): with self._fixture(): idx = Index('a', 'b', 'c', participating_x=7, participating2_x=15, participating2_y="lazy" ) eq_( idx.dialect_options, { "participating": {'x': 7, 'y': False, 'z_one': None}, "participating2": {'x': 15, 'y': 'lazy', 'pp': 'default'}, } ) eq_( idx.dialect_kwargs, { 'participating_x': 7, 'participating2_x': 15, 'participating2_y': 'lazy' } ) def test_foreign_key_propagate(self): with self._fixture(): m = MetaData() fk = ForeignKey('t2.id', participating_foobar=True) t = Table('t', m, Column('id', Integer, fk)) fkc = [ c for c in t.constraints if isinstance( c, ForeignKeyConstraint)][0] eq_( fkc.dialect_kwargs, {'participating_foobar': True} ) def test_foreign_key_propagate_exceptions_delayed(self): with self._fixture(): m = MetaData() fk = ForeignKey('t2.id', participating_fake=True) c1 = Column('id', Integer, fk) assert_raises_message( exc.ArgumentError, "Argument 'participating_fake' is not accepted by " "dialect 'participating' on behalf of " "", Table, 't', m, c1 ) def test_wildcard(self): with self._fixture(): m = MetaData() t = Table('x', m, Column('x', Integer), participating2_xyz='foo', participating2_engine='InnoDB', ) eq_( t.dialect_kwargs, { 'participating2_xyz': 'foo', 'participating2_engine': 'InnoDB' } ) def test_uninit_wildcard(self): with self._fixture(): m = MetaData() t = Table('x', m, Column('x', Integer)) eq_( t.dialect_options['participating2'], {'*': None} ) eq_( t.dialect_kwargs, {} ) def test_not_contains_wildcard(self): with self._fixture(): m = MetaData() t = Table('x', m, Column('x', Integer)) assert 'foobar' not in t.dialect_options['participating2'] def test_contains_wildcard(self): with self._fixture(): m = MetaData() t = Table('x', m, Column('x', Integer), participating2_foobar=5) assert 'foobar' in t.dialect_options['participating2'] def test_update(self): with self._fixture(): idx = Index('a', 'b', 'c', participating_x=20) eq_(idx.dialect_kwargs, { "participating_x": 20, }) idx._validate_dialect_kwargs({ "participating_x": 25, "participating_z_one": "default"}) eq_(idx.dialect_options, { "participating": {"x": 25, "y": False, "z_one": "default"} }) eq_(idx.dialect_kwargs, { "participating_x": 25, 'participating_z_one': "default" }) idx._validate_dialect_kwargs({ "participating_x": 25, "participating_z_one": "default"}) eq_(idx.dialect_options, { "participating": {"x": 25, "y": False, "z_one": "default"} }) eq_(idx.dialect_kwargs, { "participating_x": 25, 'participating_z_one': "default" }) idx._validate_dialect_kwargs({ "participating_y": True, 'participating2_y': "p2y"}) eq_(idx.dialect_options, { "participating": {"x": 25, "y": True, "z_one": "default"}, "participating2": {"y": "p2y", "pp": "default", "x": 9} }) eq_(idx.dialect_kwargs, { "participating_x": 25, "participating_y": True, 'participating2_y': "p2y", "participating_z_one": "default"}) def test_key_error_kwargs_no_dialect(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises( KeyError, idx.kwargs.__getitem__, 'foo_bar' ) def test_key_error_kwargs_no_underscore(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises( KeyError, idx.kwargs.__getitem__, 'foobar' ) def test_key_error_kwargs_no_argument(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises( KeyError, idx.kwargs.__getitem__, 'participating_asdmfq34098' ) assert_raises( KeyError, idx.kwargs.__getitem__, 'nonparticipating_asdmfq34098' ) def test_key_error_dialect_options(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises( KeyError, idx.dialect_options['participating'].__getitem__, 'asdfaso890' ) assert_raises( KeyError, idx.dialect_options['nonparticipating'].__getitem__, 'asdfaso890') def test_ad_hoc_participating_via_opt(self): with self._fixture(): idx = Index('a', 'b', 'c') idx.dialect_options['participating']['foobar'] = 5 eq_(idx.dialect_options['participating']['foobar'], 5) eq_(idx.kwargs['participating_foobar'], 5) def test_ad_hoc_nonparticipating_via_opt(self): with self._fixture(): idx = Index('a', 'b', 'c') idx.dialect_options['nonparticipating']['foobar'] = 5 eq_(idx.dialect_options['nonparticipating']['foobar'], 5) eq_(idx.kwargs['nonparticipating_foobar'], 5) def test_ad_hoc_participating_via_kwargs(self): with self._fixture(): idx = Index('a', 'b', 'c') idx.kwargs['participating_foobar'] = 5 eq_(idx.dialect_options['participating']['foobar'], 5) eq_(idx.kwargs['participating_foobar'], 5) def test_ad_hoc_nonparticipating_via_kwargs(self): with self._fixture(): idx = Index('a', 'b', 'c') idx.kwargs['nonparticipating_foobar'] = 5 eq_(idx.dialect_options['nonparticipating']['foobar'], 5) eq_(idx.kwargs['nonparticipating_foobar'], 5) def test_ad_hoc_via_kwargs_invalid_key(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises_message( exc.ArgumentError, "Keys must be of the form _", idx.kwargs.__setitem__, "foobar", 5 ) def test_ad_hoc_via_kwargs_invalid_dialect(self): with self._fixture(): idx = Index('a', 'b', 'c') assert_raises_message( exc.ArgumentError, "no dialect 'nonexistent'", idx.kwargs.__setitem__, "nonexistent_foobar", 5 ) def test_add_new_arguments_participating(self): with self._fixture(): Index.argument_for("participating", "xyzqpr", False) idx = Index('a', 'b', 'c', participating_xyzqpr=True) eq_(idx.kwargs['participating_xyzqpr'], True) idx = Index('a', 'b', 'c') eq_(idx.dialect_options['participating']['xyzqpr'], False) def test_add_new_arguments_participating_no_existing(self): with self._fixture(): PrimaryKeyConstraint.argument_for("participating", "xyzqpr", False) pk = PrimaryKeyConstraint('a', 'b', 'c', participating_xyzqpr=True) eq_(pk.kwargs['participating_xyzqpr'], True) pk = PrimaryKeyConstraint('a', 'b', 'c') eq_(pk.dialect_options['participating']['xyzqpr'], False) def test_add_new_arguments_nonparticipating(self): with self._fixture(): assert_raises_message( exc.ArgumentError, "Dialect 'nonparticipating' does have keyword-argument " "validation and defaults enabled configured", Index.argument_for, "nonparticipating", "xyzqpr", False ) def test_add_new_arguments_invalid_dialect(self): with self._fixture(): assert_raises_message( exc.ArgumentError, "no dialect 'nonexistent'", Index.argument_for, "nonexistent", "foobar", 5 ) class NamingConventionTest(fixtures.TestBase, AssertsCompiledSQL): __dialect__ = 'default' def _fixture(self, naming_convention, table_schema=None): m1 = MetaData(naming_convention=naming_convention) u1 = Table('user', m1, Column('id', Integer, primary_key=True), Column('version', Integer, primary_key=True), Column('data', String(30)), schema=table_schema ) return u1 def test_uq_name(self): u1 = self._fixture(naming_convention={ "uq": "uq_%(table_name)s_%(column_0_name)s" }) uq = UniqueConstraint(u1.c.data) eq_(uq.name, "uq_user_data") def test_ck_name_required(self): u1 = self._fixture(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s" }) ck = CheckConstraint(u1.c.data == 'x', name='mycheck') eq_(ck.name, "ck_user_mycheck") assert_raises_message( exc.InvalidRequestError, r"Naming convention including %\(constraint_name\)s token " "requires that constraint is explicitly named.", CheckConstraint, u1.c.data == 'x' ) def test_ck_name_deferred_required(self): u1 = self._fixture(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s" }) ck = CheckConstraint(u1.c.data == 'x', name=elements._defer_name(None)) assert_raises_message( exc.InvalidRequestError, r"Naming convention including %\(constraint_name\)s token " "requires that constraint is explicitly named.", schema.AddConstraint(ck).compile ) def test_column_attached_ck_name(self): m = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s" }) ck = CheckConstraint('x > 5', name='x1') Table('t', m, Column('x', ck)) eq_(ck.name, "ck_t_x1") def test_table_attached_ck_name(self): m = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s" }) ck = CheckConstraint('x > 5', name='x1') Table('t', m, Column('x', Integer), ck) eq_(ck.name, "ck_t_x1") def test_uq_name_already_conv(self): m = MetaData(naming_convention={ "uq": "uq_%(constraint_name)s_%(column_0_name)s" }) t = Table('mytable', m) uq = UniqueConstraint(name=naming.conv('my_special_key')) t.append_constraint(uq) eq_(uq.name, "my_special_key") def test_fk_name_schema(self): u1 = self._fixture(naming_convention={ "fk": "fk_%(table_name)s_%(column_0_name)s_" "%(referred_table_name)s_%(referred_column_0_name)s" }, table_schema="foo") m1 = u1.metadata a1 = Table('address', m1, Column('id', Integer, primary_key=True), Column('user_id', Integer), Column('user_version_id', Integer) ) fk = ForeignKeyConstraint(['user_id', 'user_version_id'], ['foo.user.id', 'foo.user.version']) a1.append_constraint(fk) eq_(fk.name, "fk_address_user_id_user_id") def test_fk_attrs(self): u1 = self._fixture(naming_convention={ "fk": "fk_%(table_name)s_%(column_0_name)s_" "%(referred_table_name)s_%(referred_column_0_name)s" }) m1 = u1.metadata a1 = Table('address', m1, Column('id', Integer, primary_key=True), Column('user_id', Integer), Column('user_version_id', Integer) ) fk = ForeignKeyConstraint(['user_id', 'user_version_id'], ['user.id', 'user.version']) a1.append_constraint(fk) eq_(fk.name, "fk_address_user_id_user_id") def test_custom(self): def key_hash(const, table): return "HASH_%s" % table.name u1 = self._fixture(naming_convention={ "fk": "fk_%(table_name)s_%(key_hash)s", "key_hash": key_hash }) m1 = u1.metadata a1 = Table('address', m1, Column('id', Integer, primary_key=True), Column('user_id', Integer), Column('user_version_id', Integer) ) fk = ForeignKeyConstraint(['user_id', 'user_version_id'], ['user.id', 'user.version']) a1.append_constraint(fk) eq_(fk.name, "fk_address_HASH_address") def test_schematype_ck_name_boolean(self): m1 = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s"}) u1 = Table('user', m1, Column('x', Boolean(name='foo')) ) # constraint is not hit eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "foo" ) # but is hit at compile time self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (' "x BOOLEAN, " "CONSTRAINT ck_user_foo CHECK (x IN (0, 1))" ")" ) def test_schematype_ck_name_boolean_not_on_name(self): m1 = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(column_0_name)s"}) u1 = Table('user', m1, Column('x', Boolean()) ) # constraint is not hit eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "_unnamed_" ) # but is hit at compile time self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (' "x BOOLEAN, " "CONSTRAINT ck_user_x CHECK (x IN (0, 1))" ")" ) def test_schematype_ck_name_enum(self): m1 = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s"}) u1 = Table('user', m1, Column('x', Enum('a', 'b', name='foo')) ) eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "foo" ) # but is hit at compile time self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (' "x VARCHAR(1), " "CONSTRAINT ck_user_foo CHECK (x IN ('a', 'b'))" ")" ) def test_schematype_ck_name_propagate_conv(self): m1 = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s"}) u1 = Table('user', m1, Column('x', Enum('a', 'b', name=naming.conv('foo'))) ) eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "foo" ) # but is hit at compile time self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (' "x VARCHAR(1), " "CONSTRAINT foo CHECK (x IN ('a', 'b'))" ")" ) def test_schematype_ck_name_boolean_no_name(self): m1 = MetaData(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s" }) u1 = Table( 'user', m1, Column('x', Boolean()) ) # constraint gets special _defer_none_name eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "_unnamed_" ) # no issue with native boolean self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (' "x BOOLEAN" ")", dialect='postgresql' ) assert_raises_message( exc.InvalidRequestError, "Naming convention including \%\(constraint_name\)s token " "requires that constraint is explicitly named.", schema.CreateTable(u1).compile ) def test_schematype_no_ck_name_boolean_no_name(self): m1 = MetaData() # no naming convention u1 = Table( 'user', m1, Column('x', Boolean()) ) # constraint gets special _defer_none_name eq_( [c for c in u1.constraints if isinstance(c, CheckConstraint)][0].name, "_unnamed_" ) self.assert_compile( schema.CreateTable(u1), 'CREATE TABLE "user" (x BOOLEAN, CHECK (x IN (0, 1)))' ) def test_ck_constraint_redundant_event(self): u1 = self._fixture(naming_convention={ "ck": "ck_%(table_name)s_%(constraint_name)s"}) ck1 = CheckConstraint(u1.c.version > 3, name='foo') u1.append_constraint(ck1) u1.append_constraint(ck1) u1.append_constraint(ck1) eq_(ck1.name, "ck_user_foo") def test_pickle_metadata(self): m = MetaData(naming_convention={"pk": "%(table_name)s_pk"}) m2 = pickle.loads(pickle.dumps(m)) eq_(m2.naming_convention, {"pk": "%(table_name)s_pk"}) t2a = Table('t2', m, Column('id', Integer, primary_key=True)) t2b = Table('t2', m2, Column('id', Integer, primary_key=True)) eq_(t2a.primary_key.name, t2b.primary_key.name) eq_(t2b.primary_key.name, "t2_pk")